V.Kumaresh, S.Madhan
Twincharging does not refer to a twin-turbo arrangement, but rather when two different kinds of compressors are used. It is a combination of an exhaust-driven turbocharger and an engine-driven supercharger, each mitigating the weaknesses of the other (eliminating turbo lag, which would otherwise result when the turbocharger is not up to its operating speed). Twincharging allows getting high boost levels from relatively low cost components. It is a great way to increase the power of a small engine with a high RPM range. Obviously there is a large heat built up issue so a larger intercooler is pre-requisite. Efficiencies of the turbo and supercharger are also multiplied. Its largest benefit over anti-lag systems in race cars is its reliability. The two major types of twincharging are series and parallel. The benefit of twincharging on the same engine is increased torque across the entire power band, and thus optimum performance at all rpm. This paper presents an understanding of the super, turbo and twincharger, their types and application of twincharger and suggests a technique in twincharging.
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